On 31st July 2022, it was the Sporadic E radio propagation day in Malaysia where I could receive 3 Thailand FM radio stations in Balakong, Selangor, Malaysia (20km south from Kuala Lumpur).
Between 4pm to 6pm (UTC+8), I heard 3 Thailand radio stations via TECSUN PL-380 radio receiver such as:
- Thailand Parliament Radio Station FM 87.5MHz from Bangkok (1205km)
- Happy Time Radio FM 95.5MHz from Surat Thani (726km)
- Unknown Thailand radio station FM 92.0MHz
It is my second time to receive Sporadic E radio stations in Malaysia since last DX in October 2021 where I heard MCOT Chaiyaphum FM 102.0MHz in Puchong, Selangor, Malaysia.
1. Thailand Parliament Radio Station FM 87.5MHz from Bangkok
FM 87.5MHz from Bangkok is the furthest FM radio station that I received in Balakong, Selangor, Malaysia in the DX history. Adjacent channel interference noise with local radio station RTM Radio Klasik FM 87.7MHz from Kuala Lumpur Tower was detected when monitoring Sporadic E propagation of Thailand Parliament Radio Station from Bangkok.
In Surat Thani and Udon Thani, this radio station is also operating on the frequency FM 87.5MHz. As Bangkok transmitter has higher ERP (effective radiated power) than Surat Thani and Udon Thani, so I identify FM 87.5MHz signal that I received in Balakong, Selangor, Malaysia is from Bangkok.
SINPO: 21121
Sathani Witthayu Krachaisiang Ratthasapha (สถานีวิทยุกระจายเสียงรัฐสภา)
- Frequency: FM 87.5MHz
- Power: 5kW
- ERP: 20kW
- Transmission site: Soi Aree Samphan (ซอยอารีย์สัมพันธ์), Rama VI Road (ถ.พระราม 6), Khwaeng Sam Sen Nai (แขวงสามเสนใน), Khet Phaya Thai (เขตพญาไท), Bangkok กรุงเทพฯ, Thailand
- Receiving site: Balakong, Selangor, Malaysia
- Distance: 1205km
- Receiving date/time: 31.07.2022 1738H (UTC+8)
2. Happy Time Radio FM 95.5MHz from Surat Thani
In Southern Thailand region where nearby Malaysia border, FM 95.5MHz is also operated by Radio Thailand Satun in Satun Province. However, I matched with Radio Thailand Satun FM 95.5MHz online LIVE streaming content with what I heard on FM 95.5MHz through the radio receiver, it does not match at all. Therefore, FM 95.5MHz Sporadic E signal from Thailand is not Radio Thailand Satun because Radio Thailand Satun does not play Lukthung (Thai country music) during the receiving time. Somebody told that FM 95.5MHz maybe from Bangkok, but FM 95.5MHz in Bangkok is Hitz 955 (formerly known as Virgin Hitz) which is a hot contemporary Thai radio station in Bangkok City.
During the signal monitoring, FM 95.5MHz was airing bunch of commercials after playing Thai Lukthung. So, FM 95.5MHz is Happy Time Radio from Surat Thani.
Happy Time Radio frequency license is belonged to Radio Thailand Surat Thani. The NBT (National Broadcasting of Thailand) Surat Thani division leases its frequency FM 95.5MHz to Happy Time Radio.
Transmitter site is located in Khao Tha Phet, the height above sea level is about 210 meters, meanwhile antenna height of Happy Time Radio FM 95.5MHz is 60 meters.
Adjacent channel interference with local radio station RTM Nasional FM 95.3MHz from Gunung Ulu Kali was detected when monitoring Sporadic E radio propagation from Happy Time Radio Surat Thani on FM 95.5MHz.
- Frequency: FM 95.5MHz
- Power: 5kW
- ERP: 3.6kW (possibly using circular antenna with negative value antenna gain)
- Transmitter site: Khao Tha Phet, Tambon Makham Tia, Mueang Surat Thani District, Surat Thani Province, Thailand
- Receiving site: Balakong, Selangor State, Malaysia
- Distance: 726km
- Receiving date/time: 31.07.2022 1725H (UTC+8)
SINPO: 22322
3. FM 92.0MHz unknown radio station from Thailand
In Balakong, FM 92.0MHz was RTM Nasional FM from Hulu Langat Batu 18, but it was permanently off air. Until today, FM 92.0MHz is totally empty frequency. During Sporadic E propagation, I heard Thailand radio signal on the frequency FM 92.0MHz. Thought it was Radio Thailand Yala FM 92.0MHz from Khao Pok Yo which is available in Malaysia areas where border with Thailand like Kedah, Kelantan, Perlis and Hulu Perak. By identifying the radio station with comparing the content between radio and online LIVE streaming of, Radio Thailand Yala FM 92.0MHz, the contents between them were negatively matched.
So, FM 92.0MHz that I received in Malaysia is not Radio Thailand Yala, but I heard there were having co-channel interference of two different Thailand radio stations. Again, I matched them with Radio Thailand Yala FM 92.0MHz online streaming, they are not matched.
In conclusion, I could not identify where is the Thailand radio station on FM 92.0MHz transmitted from.
SINPO code for FM 92.0MHz UNID Sporadic E from Thailand is 31422.
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